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Composing a slab-waveguide by spin-coating dye-doped organic monomer onto a glass substrate under UV irradiation to be polymer, frequency selective lasing is observed by the side pumping of an interference pattern of pump beam. The thin-film slab-waveguide consists of Rhodamine B (Rh-B)-doped thio ether methacrylate (TEMA) with the thickness of approximately 2 μm. Pumping the thin-film by the interference pattern of Nd:YAG (SHG) 530 nm laser with the gain period Λ of 15 μm, the lasing output is selectively observed near 610 nm, in contrast to no lasing under a uniform pumping. Both effects of the pump energy on the lasing output and of the gain period on the wavelength are also described.
Ryo Ohmori,Satoshi Tanaka,Akira Watanabe,Seiichiro Hayakawa, andHeihachi Sato
"Dye-doped organic polymer thin film waveguide laser", Proc. SPIE 4513, Optoelectronic Information Systems and Processing, (8 August 2001); https://doi.org/10.1117/12.435887
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Ryo Ohmori, Satoshi Tanaka, Akira Watanabe, Seiichiro Hayakawa, Heihachi Sato, "Dye-doped organic polymer thin film waveguide laser," Proc. SPIE 4513, Optoelectronic Information Systems and Processing, (8 August 2001); https://doi.org/10.1117/12.435887